Electric switch



M. GUETT. ELECTRIC SWITCH. APPLICATION FILED JULY15, 1919.

Patefited July 27, 1920.

zen of the United UNITED. STATES, PATENT OFFICE."

IIONROE G-UETT, F HARTFORD, CONNECTI MANUF.ACTURING COMPANY, OF HARTCONNECTICUT.

CUT, .ASSICNOR TO THE HART 88 HEGEMAN FORD, CONNECTICUT," A CORPORATIONOF ELECTRIC swrron.

Specification of Letters Patent.

1 Application filed July 15, 1919. Serial No. 310,932.

To all whom it may concern:

Be it known that I, MONROE Gnn'rr, a citi:

States, residing .at I-Iartford, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements inElectric Switches, of which the following is a specification. A a

fully of the present specification, I have shown in detail, a form ofembodiment of the invention, which to enable those skilled in the art topractice the same will be set forth in the following description. I amnot restricted to this disclosure; I may depart therefrom in severalrespects within the scope of the invention defined by the claimsfollowing said description.

Referring to said drawings: Figure 1 isa side elevation of a switchembodying'the invention.

' Fig, 2 is a bottom plan view of the swltch.

Fig. 3 is a of the arrows.

Fig. 4 is a cross section on the line 4-4 of Fi 1 looking in thedirection of the arrows. like 1 characters refer to like partsthroughout the several views.

The supporting body of the switch may be of any suitable character. Thatshown comrises a blockas 2, of insulating material. 0 the oppositevfaces of this block are suitably fastened contacts as 3, duplicates ineffect of each other and of some conducting material. The contacts orterminals 3 are furnished with suitable means, as the screws 4,'bywhichwires or their equivalents may be connected to the respectivecontacts. At opposite sides of the insulating body are shown asmounted,the duplicate plates or check pieces 5, which may be of metal and suchas vulcanized rubber.

longitudinal section on the line 3-3 of Fig. .2 looking in the d rection,.menta1 contacts .ends, when the switch ng member is in cir- 14 fromthe bridging member which are connected to each other and to -.the body2 in some convenient way, screws 36 belng shown for the purpose. Theplates 5 project forwardly from the body 2, their upper ends beingintegrally united by the plate 7 The several plates 5 and 7 constitute aconvenient way of sustaining the switching or circuit-controlling memberand the actuating means therefor.

As will be understood, the switching on circuit-controlling member mayvary as to character, that shown being denoted in the general way by 8.Likewise, the actuator for the switching -or circuit-controlling membermay also vary, that shown is designated by 9 and is in the form of alever pivoted between the plates 5, as at' 10, and extending through aslot as 11 in,the top plate 7.

The switching member 8 as shown involves in its make-up duplicate sidearms or pieces as 12 of some insulating material, The arms or pieces 12are in transverse register and they lie across the outer surfaces of theplates 5.

what elongated. At their upper ends they have elongated slots 13, inregistration with each other, through which and also through the sideplates 5, rivets or pins as 14, which may be of metal and constitutingsuitable pivot means, are adapted respectively to extend. The switchingor circuit-controlling member 8 is shown as being in the off positioninFig. 1, at which time the mounting rivets 14 are against the upper endsof the transversely alined slots 13. The arms 12 are shown as having attheir lower ends, .elongated registering slots as 15, adapted toreceive. the metallic pin 16, which mechanically bridges the arms 10.The ends of the pin 16 are headed. This pin 16 constitutes a convenientbridging member for electrically bridging across the comple- 3, at.their free resilient cuit closing position.

The arms or side pieces ing member 8 of 12 of the switchcourse properlyinsulate Patented July 27, 1920.

They are comparatively flat and are someelectrically the supportingrivets or pivots or pin16 in maining "parts of the switching orcircuit-- controlling member 8'. Between the arms or check pieces 12 andtransversely allned therewith are arms as 17 counterparts of each other,of some insulating material, and the outer and lower notched ends ofwhich fit a peripheral groove or channel 18 in the bridging member 16.These arms 17 receive around them the coiled spring 19 which bears atits outer end against the disk 20 supported. by the shoulders 17 of, thearms 17, and at its upper end acts against a like disk 21, which engagesagainst the pin 22, fitting companion open ended slots 23, in the arms17. The arms 17, it will be apparent, insu-- late the actuatingmechanism of theiswitch, from the bridging member 16. The pin 22 fits anotch'in the lower or short branch of,

the rock lever 9.

The switching member 8 is shown as off in Fig. 3, for instance. To moveit to on, the followingaction takes place. The ball or upper end of therock lever 9 will be thrust to the left so that the short or inner armof the rock lever willbe moved to the right. As a result, the pin 22 ismoved downwardly carrying the disk 21 therewith, and compressing thespring 19, and at the same time moving the switching member 8 toward thedead center line of the switch, at which point the spring will bereleased and ..will re-act and thus snap the switching member to circuitclosing position and carry the rounded ends of the projecting member orpin 16 against the free ends of the contacts 3. The dead center line ofthe switch shown, intersects the axis of motion of the switching member8 and the axis or'center of the bridging member or pin 16.

- What I claim is V 1. An electric switch comprising a swinging arm ofinsulating material, a contact lr dging part of conducting material,supported at the free portion of the insulating arm, an actuator mountedfor back and forth movement and provided with a pin, a spring, and aninsulating arm supporting the spring, the spring being interposedbetween the pin and the bridging member, and the pin acting on eachmotion of the actuator, to condition the spring-to snap the switchingmember,

after said pin hascrossed the dead center line which intersects the axisof motion of the switching memberE-and the center of thecontact-bridging-pai'tf" 2. An electric switch comprising, a body ofinsulating material, contacts fastened to switching member mounted forback and forth movement, spring means movable with the switching member,the actuator on each of its movements conditioning the spring means toimpart a snap movement to the switching member when released by the actuator to thus cause the switching member to assume on and offpositlons, said bridging member when the-switching member is in the onposition contacts. a

3. An electric switch comprising a swinging switching member having anarm of insulating material, and a contact-bridging engaging said memberof conducting material carried by said arm, an actuator for theswitching member, mounted for back and forth movement, a p n fittedagainst the bridging member, a spring supported pin swinging with theswitching member and belng of insulating material, the actuator on eachof its movements conditioning the spring to impart a snap movement tothe switching ator.

4. An electric switch ing switching member sulating material and memberofconducting material carried by sa d arm, an actuator for the switchingmember mounted for back and forth movement, a pair of pins ofinsulating. material fitted against the bridging member, a springsupported by and around 'the pins, the pins s'wlnging with the switchingmember, the actuator on each of its movements condicomprising aswinghavmg an arm of ina contact bridging tioning the spring to impart asnap move ment to the switching member when. freed by the actuator.

by and around the pin, the

member when freed by the actun electric switch comprising a swingingswitching member having an arm of insulating material and member ofconducting said arm, an actuator for the switching member mounted forback and forth move- -'ment, a pair of arms of insulating materialfitted against the bridging member and each having a shoulder, a washeraround the pins and fitted against end by the washer, a second washerengagsaid. shoulders, a coiled Spring around the pins and supported atone a contact-bridging material carried by ing the opposite end of thespring; said pins In testimeny whereof I afiix my signature Q havingslots, a pin fitted In said slots and in the presence of two witnesses.

engaging said second washer, the actuator w MONROE GUETT being adaptedto engage said pin on each of its movements and acting to condition theWVitnesses: spring to impart a snap movement to the v A. J. BENNETT,switching member when it is freed. J. M. KINGSLEY.

